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0091U

What 0091U is

This code appears in the Medicare NCCI edit tables. It has no RVUs in the CY2026 Physician Fee Schedule file.

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Medically Unlikely Edit (MUE)

Medicare caps 0091U at 1 unit per date of service for practitioner claims (MAI 2 - date of service edit (absolute): units above the MUE never pay), rationale: Code Descriptor / CPT Instruction. Units above the cap are denied unless the edit's adjudication rules allow an appeal with documentation.

Billed with 0091U? These codes are bundled into it

0091U is a Column 1 code in 15 active NCCI PTP edits. When one of these Column 2 codes is reported on the same date of service, it is denied as bundled - unless the edit's modifier indicator is 1 and documentation supports a distinct service with an NCCI-associated modifier.

Column 2 codeShort descriptionModifier indicator
0163U0 - no modifier bypassCheck pair
0251U1 - modifier may bypassCheck pair
80503Path clin consltj sf 5-201 - modifier may bypassCheck pair
80504Path clin consltj mod 21-401 - modifier may bypassCheck pair
80505Path clin consltj high 41-601 - modifier may bypassCheck pair
80506Path clin consltj prolng svc1 - modifier may bypassCheck pair
83516Immunoassay nonantibody1 - modifier may bypassCheck pair
83518Immunoassay dipstick1 - modifier may bypassCheck pair
83519Ria nonantibody1 - modifier may bypassCheck pair
83520Immunoassay quant nos nonab1 - modifier may bypassCheck pair
88184Flowcytometry/ tc 1 marker1 - modifier may bypassCheck pair
88185Flowcytometry/tc add-on1 - modifier may bypassCheck pair
88187Flowcytometry/read 2-81 - modifier may bypassCheck pair
88188Flowcytometry/read 9-151 - modifier may bypassCheck pair
88189Flowcytometry/read 16 & >1 - modifier may bypassCheck pair

0091U is bundled into these codes

0091U appears as a Column 2 code in 16 active edits. Reported with one of these Column 1 codes on the same date of service, 0091U is the code that denies.

Column 1 codeShort descriptionModifier indicator
0414U1Check pair
0421U0Check pair
0460U1Check pair
0461U1Check pair
0464U0Check pair
0474U0Check pair
0496U1Check pair
0498U1Check pair
0499U1Check pair
0501U0Check pair
81528Oncology colorectal scr0Check pair
82274Assay test for blood fecal0Check pair
G0104Ca screen;flexi sigmoidscope0Check pair
G0105Colorectal scrn; hi risk ind0Check pair
G0121Colon ca scrn not hi rsk ind0Check pair

Data: CMS CY2026 Physician Fee Schedule RVU file (October release, RVU26D) and Medicare NCCI PTP practitioner edits v32.3 (2026 Q4). Verify against the official files before billing or contracting decisions.